Added Makefile; make & make clean both work

Makefile

@@ -0,0 +1,57 @@
+#!/usr/bin/make
+#
+
+# The toplevel directory of the source tree.
+SRCDIR = ./src
+
+# The directory into which object code files should be written.
+OBJDIR = ./obj
+
+# The directory into which executable file should be written.
+BINDIR = ./bin
+
+# C Compiler and options for use in building executable.
+CC = gcc -g -Os -Wall
+
+SRC = \
+	$(SRCDIR)/pit.c \
+	$(SRCDIR)/project.c \
+	$(SRCDIR)/table.c \
+	$(SRCDIR)/task.c
+
+OBJ = \
+	$(OBJDIR)/pit.o \
+	$(OBJDIR)/project.o \
+	$(OBJDIR)/table.o \
+	$(OBJDIR)/task.o
+
+APP = pit
+
+all: $(OBJDIR) $(APP)
+
+$(OBJDIR):
+	-mkdir $(OBJDIR)
+	-mkdir $(BINDIR)
+
+$(APP): $(OBJ)
+	$(CC) -o $(BINDIR)/$(APP) $(OBJ)
+
+$(OBJDIR)/pit.o: $(SRCDIR)/pit.c $(SRCDIR)/pit.h
+	$(CC) -o $(OBJDIR)/pit.o -c $(SRCDIR)/pit.c
+
+$(OBJDIR)/project.o: $(SRCDIR)/project.c $(SRCDIR)/project.h
+	$(CC) -o $(OBJDIR)/project.o -c $(SRCDIR)/project.c
+
+$(OBJDIR)/table.o: $(SRCDIR)/table.c $(SRCDIR)/table.h
+	$(CC) -o $(OBJDIR)/table.o -c $(SRCDIR)/table.c
+
+$(OBJDIR)/task.o: $(SRCDIR)/task.c $(SRCDIR)/task.h
+	$(CC) -o $(OBJDIR)/task.o -c $(SRCDIR)/task.c
+
+
+clean:
+	rm -f $(OBJDIR)/*.o
+	rm -f $(BINDIR)/$(APP)
+	rmdir $(OBJDIR)
+	rmdir $(BINDIR)
+